package com.webserver_v2.controller;

import com.webserver_v2.entity.User;
import com.webserver_v2.http.HttpServletRequest;
import com.webserver_v2.http.HttpServletResponse;

import java.io.*;
import java.net.URISyntaxException;

public class UserController {

    private static File rootDir;
    private static File staticDir;
    private static File userDir;

    static {
        try {
            rootDir = new File(
                    UserController.class.getClassLoader()
                    .getResource(".").toURI()
            );
            staticDir = new File(rootDir,"static");
        } catch (URISyntaxException e) {
            e.printStackTrace();
        }

    }
    static {
        userDir = new File("./users");
        if (!userDir.exists()){
            userDir.mkdirs();
        }
    }
    public void reg(HttpServletRequest request, HttpServletResponse response){
        System.out.println("开始处理注册....");
        String username = request.getParameter("username");
        String password = request.getParameter("password");
        String nickname = request.getParameter("nickname");
        String ageStr = request.getParameter("age");

        if (
                username==null||username.isEmpty()||
                password==null||password.isEmpty()||
                nickname==null||nickname.isEmpty()||
                ageStr==null||ageStr.isEmpty()||!ageStr.matches("[0-9]+")
        ){
            response.sendRedirect("reg_info_error.html");
            return;
        }
        System.out.println(username+","+password+","+nickname+","+ageStr);
        int age = Integer.parseInt(ageStr);
        User user = new User(username,password,nickname,age);
        File file = new File(userDir,username+".obj");
        if (file.exists()){
            response.sendRedirect("have_user.html");
            return;
        }
        try (
                FileOutputStream fos = new FileOutputStream(file);
                ObjectOutputStream oos = new ObjectOutputStream(fos);
                ){
            oos.writeObject(user);
            response.sendRedirect("reg_success.html");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public void login(HttpServletRequest request,HttpServletResponse response){
        String username = request.getParameter("username");
        String password = request.getParameter("password");

        if (username==null||username.trim().isEmpty()
           ||password==null||password.trim().isEmpty()){
            response.sendRedirect("login_info_error.html");
            return;
        }
        File file = new File(userDir,username+".obj");
        if (file.exists()){
            try(
                    FileInputStream fis = new FileInputStream(file);
                    ObjectInputStream ois = new ObjectInputStream(fis);
                    ) {
                User user = (User)ois.readObject();
                if (user.getPassword().equals(password)){
                    response.sendRedirect("login_success.html");
                    return;
                }

            } catch (IOException | ClassNotFoundException e) {
                e.printStackTrace();
            }
        }
        response.sendRedirect("login_fail.html");
    }
}
